Limitless With Chris Hemsworth | S01e03 Fasting.mp4

After four days without food, Chris must test his focus and physical endurance by spearfishing off the Great Barrier Reef to catch his first meal. Key Longevity Takeaways

Avoid eating before midday at least three times a week (a form of time-restricted feeding). Limitless with Chris Hemsworth S01E03 Fasting.mp4

A longer multi-day fast, similar to the one Chris performed, once a year. Where to Watch After four days without food, Chris must test

In the third episode of National Geographic’s , titled "Fasting," Chris explores how abstaining from food can trigger the body’s internal anti-aging mechanisms. Guided by longevity expert Dr. Peter Attia , Hemsworth pushes his physical and mental limits to understand the long-term benefits of caloric restriction. The Challenge: A 4-Day Fast Where to Watch In the third episode of

To activate autophagy , a cellular "recycling" process where the body clears out damaged cells to regenerate newer, healthier ones.

Hemsworth, typically accustomed to a high-calorie "superhero" diet for his roles like Thor, undergoes a grueling with no food at all.